Sodium lactate

Sodium lactate
Names
IUPAC name
Sodium 2-hydroxypropanoate
Other names
Sodium DL-lactate; Lactic acid sodium salt; E325
Identifiers
72-17-3 YesY
ChEBI CHEBI:75228 N
ChEMBL ChEMBL1357 YesY
ChemSpider 6049 YesY
Jmol interactive 3D Image
PubChem 6286
Properties
C3H5NaO3
Molar mass 112.06 g/mol[1]
Appearance White powder
Density 1.33 g/mL,[1] 1.31 g/ml (60 % syrup)[1]
Melting point 161 to 162 °C (322 to 324 °F; 434 to 435 K)

17 °C (60 % syrup)[2]

Boiling point 113 °C (235 °F; 386 K) (60 % syrup)[2]
> 1.5 g/mL
Hazards
Flash point < 25
Lethal dose or concentration (LD, LC):
1000 mg/kg (intravenous, rat)[3]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YesYN ?)
Infobox references

Sodium lactate is the sodium salt of lactic acid, and has a mild saline taste. It is produced by fermentation of a sugar source, such as corn or beets, and then, by neutralizing the resulting lactic acid[4] to create a compound having the formula NaC3H5O3

Usage

As a food additive, sodium lactate has the E number E325 and is naturally a liquid product, but also is available in powder form. It acts as a preservative, acidity regulator, and bulking agent.[5]

Sodium lactate is sometimes used in shampoo products and other similar items such as liquid soaps as it is an effective humectant and moisturizer.[6]

Sodium lactate is used to treat arrhythmias caused by overdosing of class I antiarrythmics, as well as pressor sympathomimetics which can cause hypertension.[7]

It also can be given intravenously as a source of bicarbonate for preventing or controlling mild to moderate metabolic acidosis in patients with restricted oral intake (for sodium bicarbonate) whose oxidative processes are not seriously impaired. However, the use in lactic acidosis is contraindicated.[8] It can cause panic attacks in patients with existing panic disorder.[9]

Regarding milk

Despite the similarity in name, sodium lactate is not chemically similar to lactose (milk sugar) and therefore need not be restricted by those with a milk allergy.[4][10] In general, lactates such as sodium, calcium, and potassium lactate are salts derived from the neutralization of lactic acid and most commercially used lactic acids are fermented from dairy-free products such as cornstarch, potatoes, or molasses.[11] Sugar or tapioca additionally may be used. However some lactic acid is fermented from dairy products such as whey[4] and lactose.[11] Whey is made of up 6.5% solids of which 4.8% is solid lactose.[12] Waste whey typically is used to produce lactic acid when the whey itself is produced as waste during the manufacture of certain dairy products.[13] As a result, such dairy-type lactic acid generally goes back into dairy products, such as ice cream and cream cheese,[11] rather than into non-dairy products. Moreover, although the lactic-acid starter culture to ferment corn or beets may contain milk,[4] sodium lactate does not contain milk protein and need not be restricted by someone avoiding milk or those with a milk allergy.[4][10]

References

  1. 1 2 3 Sodium lactate, chemblink.com
  2. 1 2 Safety data for sodium lactate syrup
  3. ↑ http://chem.sis.nlm.nih.gov/chemidplus/rn/72-17-3
  4. 1 2 3 4 5 Silberberg, Barrie (2009). The Autism and ADHD Diet: A Step-by-Step Guide to Hope and Healing by Living Gluten Free and Casein Free (GFCF) and Other Interventions. Sourcebooks, Inc. p. 119. ISBN 1-4022-1845-1.
  5. ↑ "Food Additive Code Numbers" (PDF). South Australian Department of Health. August 2006. Retrieved 2012-08-16.
  6. ↑ US Patent 4758599, Dawn C. Minetti, "Clear, hydroalcoholic aftershave lotion which moisturizes, conditions, and prevents irritation", issued 1988-07-19
  7. ↑ Trevor, Anthony; Bertram Katzung; Susan Masters (2008). Katzung & Trevor's Pharmacology Examination and Board Review (8e ed.). Go Dairy Free. p. 126. ISBN 0-07-148869-3.
  8. ↑ Hospira, Inc. (November 2004). "Sodium Lactate (sodium lactate) Injection, Solution, Concentrate". DailyMed. U.S. National Library of Medicine. Retrieved 2012-08-16.
  9. ↑ Eric Hollander; Daphne Simeon (2003). Concise Guide to Anxiety Disorders. American Psychiatric Pub. p. 1. ISBN 978-1-58562-080-7. Retrieved 13 May 2012.
  10. 1 2 Willitts, Alice; Deborah Carter (2007). Food allergy & your child. Class Publishing Ltd. p. 85. ISBN 1-85959-186-8. The following ingredients do not contain milk protein and need not be avoided by people allergic to milk: … Sodium lactate
  11. 1 2 3 Fleming, Alisa Marie (2008). Go Dairy Free: The Guide and Cookbook for Milk Allergies, Lactose Intolerance, and Casein-free Living. Go Dairy Free. p. 90. ISBN 0-9791286-2-5.
  12. ↑ Ranken, M. D.; R. C. Kill (1997). Food industries manual. Springer. p. 125. ISBN 0-7514-0404-7.
  13. ↑ Inamdar (2009). Biochemical Engineering: Principles And Concepts. PHI Learning Pvt. Ltd. p. 254. ISBN 81-203-3677-1.
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